... producing saw pipes, oil pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc.. TYPES: elbows, seamless and ... ,tee,caps,flange,tube etc...1. Butt weld Elbow 45degree & 90degree Long Radius &Short Radius2. Butt weld Straight Tees & Reducing ... will be happy to give you details. steel 180 deg elbow